Published on in Vol 8, No 10 (2020): October
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/18653, first published
.

1 Department of Movement and Sport Sciences, Ghent University, Ghent, Belgium
2 Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
3 Research Foundation Flanders, Brussels, Belgium